# Math Help - Find maximum point of curve graph

1. ## Find maximum point of curve graph

Hi,

when finding maximum point of graph, where do I look at? The y axis or the x axis?
Also, the answer should be "x=7" (for example), am I right?

Thank you

2. ## Re: Find maximum point of curve graph

A point has always 2 coordinates if you're working in a plane, so a maximum $M$ could be for example $M(7,4)$.

3. ## Re: Find maximum point of curve graph

Originally Posted by Siron
A point has always 2 coordinates if you're working in a plane, so a maximum $M$ could be for example $M(7,4)$.
Hmm, but the question didn't state for the coordinates of maximum point of the curve, so I thought the answer would be different. Am I wrong?

4. ## Re: Find maximum point of curve graph

But for example $x=7$ can't represent a point, it represents a line (parallel to the y-axis).

5. ## Re: Find maximum point of curve graph

Originally Posted by Siron
But for example $x=7$ can't represent a point, it represents a line (parallel to the y-axis).
Yea, I will write the answer in coordinates then

Thanks a lot

Btw, how do I find the equation of line of symmetry if the line (line of symmetry) itself is in the y axis ? Which number do I take?

6. ## Re: Find maximum point of curve graph

Do you mean the $y-$axis itself? It's just $x=0$.

7. ## Re: Find maximum point of curve graph

Originally Posted by Siron
Do you mean the $y-$axis itself? It's just $x=0$.
Yes. Thanks for the quick reply =)

8. ## Re: Find maximum point of curve graph

You're welcome!